Furnace-grate



n Model,) v 2 Sheets-Sheet 2.

H. F. WEINLAND. Q

FURNACE GRATE. No. 576,927. v Patented Feb. 9, 1897.

l vitmeoo-o 4 I amount oz @51 flmw iM" I UNITED STATES PATENT OFFICE.

HENRY F. WEINLAND, OF SPRINGFIELD, OHIO.

FU RNACE-G RATE.

SPECIFICATION forming part of Letters Patent No. 576,927, dated February 9, 1897. Application filed August 29, 1896. Serial No. 604,297. (No model.)

To all whom it may concern:

Be it known that I, HENRY F.WEINLAND, a citizen of the United States,residing at Springfield, county of Clark, State of Ohio, have invented certain new and useful Improvements in Furnace-Grates, of which the following is a specification.

My invention relates to improvements in furnace-grates of the endless type.

The object I have in view is to produce a traveling grate simple in construction, economical in operation, and to provide an easy and convenient renewal of the grate-bars.

A further object I have in view is to provide a simple and eflicient motive power.

I accomplish these results by the use of independent grate -bars with spacing lugs placed around an endless frame,with drivinggears at each end, with teeth which mesh in the space between the grates, and by driving the grates by means of a reciprocatingwatermotor in combination with other novel features, as hereinafter described.

In the accompanying drawings, Figure l is a plan view with part of the grates removed; Fig. 2, a sectional side View taken 011 a line at X of Fig. 1. Fig. 3 is a view of the motor and connections and adjusting device. Figs. 4, 5, 6, '7, 8, and 9 are detailed drawings and modifications.

In Fig. 1, A A are the furnace-walls. A are the grates placed crosswise in the furnace and supported on the framework A The framework A is provided with a flange A as shown in Fig. 4.

The grate-bars A, Fig. 6, have on their under side a lug A which fits loosely around the flange A This serves to hold the grates in place and prevents their leaving the frame work. A piece of the flange is cut away at A to provide for inserting the grates, and lugs A are provided for holding the grates the desired distance apart. The space thus provided between the grates corresponds in width and distance apart with the teeth on the driving-wheels A The framework A supports the flange A on a line between and around the periphery of the driving-wheels A The frame A is made adjustable in length by means of set-screw A. Thus when the entire length of framework, top, bottom, and .end, is filled or covered with bars the frame A Fig. 5, is shortened by means of the set-screw A until the lugs A come together and the teeth A mesh between the grates. Thus if the wheel A is revolved the entire setof bars will be shoved around the framework.

In some cases I prefer to use a spring in place of the set-screw A to prevent the spreading of the grates, and as a further modification and for a positive spacing ofbars A, I

provide endless chains A with lugs A on the links. This chain,which I term a spacing-chain, fits around an extension of the frame A and wheels A so that the lugs on the links fit between the bars A. The chain is carried around by the grates, which are in turn held the proper distance apart, so as to always mesh with the driving-teeth A The driving-wheels A are mounted on a shaftA and whenpreferable a driving-gearA is provided. The front shaft A extends through the wall A and is provided on its outer end with a sprocket-wheel B, around which is located a rack B,with dogs B and adapted to turn the gear 13 when the rack B is recipro cated, which movement is accomplished by means of the reciprocating water-motor B the speed being adjusted by means of the valve B In some cases I prefer to place this motor in circuit with the feed-water pipe to the boiler or heater, and in other cases the water for operating the motor is taken from any convenient source.

Referring to Fig. 2, O is the receptacle for the coal. ulating the thickness of the bed through the medium of a supporting-shaft O and wormgear C and hand-wheel C. A wall or partition D is located below and near the back end of the grate, so that the ash-pit can be cleaned and yet enough ash remain to prevent air passing into the furnace around the back end of the grates.

Figs. 7 and 8 showa modified form in which the links of the spacing-chain mesh with the driving-wheel teeth. The grate-bars being placed independently between the lugs A the lugs A can be dispensed with in this case, as the bars would be held the proper distance apart by the links and their lugs. I do not wish to confine myself to any particular detail construction, as it is evident O is the coal-adj usting gate for regslight changes could be made without departing from the scope of the invention. In some cases I prefer to make the grate-bars wider, providing an opening within the said bars for the driving-teeth or the lugs on the chainlinks, and-in some cases I dispense with the lugs A and provide a supplementary frame D Fig. 9. Thus the grates slide on the upper surface of the frames thus provided, the curved part D,which is attached to the lower part D thus preventing the grates from leaving the wheels A Having thus described my invention,what I claim as new, and desire to secure by Letters Patent, 'is

1. In a furnace-grate the combination with a frame with flanges as described, grate-bars located around said framework and held to the same by a lug supported loosely under said flange, and an endless chain with lugs on the links, said lugs adapted to hold the grates in proper relation with each other, the chain passing around a frame or guide to correspond with' the travel of the grate-bars, driving-wheels with teeth located at and corresponding with the curved part of the frame work, the teeth of the said driving-wheels meshinginto or between the grates and ad aptedto drive the same around the frame.

2. In a furnace-grate of the endless type the combination with an endless framework or guide, driving-wheels with teeth'looated to correspond with the curved part of the end less frame, an endless chain passing around the wheels on opposite ends of the framework, the links of said chain having raises or lugs which are adapted to keep grate-bars placed around the endless frame in position and to move them around the endless frame when the driving-wheels are revolved substantially as shown and described.

3. In a furnace the combination with endless driving-chains supported around driving-wheels as shown and described, the links of said driving-chains having raises or lugs between which are placed the grate-bars, said lugs keeping the grate-bars the desired distance apart.

4. In a furnace-grate the combination with a frame or framework, support grate-bars in an endless chain, an endless chain with spacing-lugs on the links supported on a line with the framework, the said lugs meshing into or between the grates as and for the purpose specified.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HENRY l IVEINLAND.

Vitnesses:

Ronnn'r O. RODGERS, OLIVER H. MILLER.

adapted to guide and. 

